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TECHNICAL SERVICE DEPARTMENT |
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Technical Service Bulletin |
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How to Replace a Drain Valve |
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CAUTION: Draining your water
heater for this procedure may put you at risk of being scalded by
hot water. |
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Please be careful when
working on your water heater. |
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1.
Turn the power OFF to the water heater at the circuit breaker
(electric heater) or main gas line (gas heater). |
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2.
Fasten a length of garden hose to the drain valve at the bottom of
the heater. Put the other end of the garden hose in the nearest
floor drain or snake it outside the home. |
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3.
Close the shut off valve at the cold water inlet line. |
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4.
Open the temperature and pressure relief valve at the top of the
heater. Now open the drain valve and allow the water to drain. You
will probably notice some small white particles (called scale or
sediment) during the early stages of the flow. |
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CAUTION: THE WATER WILL BE
HOT...........BE SURE NO ONE IS NEAR THE DRAIN HOSE OR THEY COULD
BE SCALDED. |
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5.
When the water stops, close the drain valve and remove the hose.
Leave the temperature and pressure relief valve at the top of the
heater open for the time being. |
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6.
Remove the old drain valve with a wrench. You may get some
additional water draining from the spud. Have some rags handy.
Replace with a new drain valve. It is a 3/4 inch National Pipe
Thread (NPT) drain valve. You may find one at any plumbing house
or home store. Use pipe sealer or Teflon tape to seal the threads.
Make sure the new drain valve is in the closed position. |
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7.
Open a hot water faucet somewhere in the home. Open the shut off
valve at the cold water inlet line. You will hear the heater start
to fill. |
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8.
When you have a steady stream of water from the temperature and
pressure valve tube, close the valve; when you have a steady
stream of water from the hot water faucet, turn the faucet off. |
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9.
Turn the power ON to the water heater at the circuit breaker
(electric heater) or main gas line (gas heater; relight pilot if
required). Allow the water heater to recover. Check the drain
valve one more time to make sure it is tight. |
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Use a new ¾ inch N.P.T drain valve
Seal threads with Teflon tape of pipe sealer
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For any specific details, as well as, any specific
requirements and special specification, please do not hesitate to
contact us at the following address: |
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Contact Details: |
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From All Over The world |
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Al-Zarka
ChinaWinds Group |
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Tel.: |
+963 |
93-330806 |
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Fax.: |
+963 |
11-2219676 |
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E-Mail |
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zarka@inbox.as |
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Contact Offices |
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USA + 1 |
Fax.: |
347-710-3509.
443-383-0053.
651-846-4935. |
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England +44 |
Fax: |
870-132-4446.
870-121-3794.
07070-658-378 |
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Voice: |
07070-658-377. |
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Italy: +39 |
Fax |
02-700-562-162 |
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China +86 |
Tel.: |
138-2446-6424. |
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E-Mail |
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zarka@inbox.as |
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